mark NodeUpdate itself as a crucial package for auto-update
look in /etc/planetlab for NodeUpdate.packages AND crucial-rpm-list for more consistent naming
delete rpms to delete individually and not in a single run

before running yum groupupdate PlanetLab, we start with
running yum update on several crucial packages
this is for when the whole groupupdate fails, which happens
NodeManager is promoted as a builtin package to update
additionally /etc/planetlab/NodeUpdate.packages, if exists
(e.g. through a conf_file) is also scanned for more packages

fixed and moved the server-side yum scripts, from nodeconfig/yum to BootstrapFS/nodeconfig/yum
now known as the nodeyum package
(might need some moer work for properly handling kexcludes in multi-fc plcs)
cleaned up all uses of /etc/planetlab/{node,slice}family
nodeconfig now does not need the build/ module anymore at build time